| Sergey Usov | |
| Birth Date: | 16 January 1964 |
| Birth Place: | Tashkent, Soviet Union |
| Height: | 1.88 m[1] |
| Weight: | 87 kg |
| Sport: | Track and field |
| Event: | 110 m hurdles, 60 m hurdles |
| Club: | Dynamo Tashkent |
Sergey Usov (Russian: Сергей Усов; born 16 January 1964 in Tashkent) is a retired Belarusian athlete who specialised in the sprint hurdles. He competed at the 1992 Summer Olympics, reaching the semifinals, as well as two outdoor and two indoor World Championships.
His personal bests are 13.27 seconds in the 110 metres hurdles (+1.8 m/s, Leningrad 1988), which is also the current Uzbekistani national record, and 7.58 seconds in the 60 metres hurdles (Moscow 1991).
| Representing the | ||||||
|---|---|---|---|---|---|---|
| 1983 | European Junior Championships | Schwechat, Austria | bgcolor=silver | 2nd | 110 m hurdles | 13.96 |
| 1984 | Friendship Games | Moscow, Soviet Union | 4th | 110 m hurdles | 13.75 | |
| 1985 | World Cup | Canberra, Australia | bgcolor=silver | 2nd | 110 m hurdles | 13.62 |
| 1987 | World Championships | Rome, Italy | 20th (h) | 110 m hurdles | 13.90 | |
| 1988 | European Indoor Championships | Budapest, Hungary | 4th | 60 m hurdles | 7.67 | |
| 1990 | Goodwill Games | Seattle, United States | 6th | 110 m hurdles | 13.95 | |
| European Championships | Split, Yugoslavia | 7th | 110 m hurdles | 13.65 | ||
| 1991 | World Indoor Championships | Seville, Spain | 5th | 60 m hurdles | 7.66 | |
| Representing the | ||||||
| 1992 | Olympic Games | Barcelona, Spain | 10th (sf) | 110 m hurdles | 13.67 | |
| World Cup | Havana, Cuba | bgcolor=silver | 2nd | 110 m hurdles | 13.55 | |
Representing  Belarus | ||||||
| 1993 | World Indoor Championships | Toronto, Canada | 8th | 60 m hurdles | 7.90 | |
| World Championships | Stuttgart, Germany | 29th (h) | 110 m hurdles | 13.90 | ||
| 1994 | European Indoor Championships | Paris, France | 9th (sf) | 60 m hurdles | 7.70 | |